(0 11 8 5 1)(2 6 4)(3 20 15 13 7)(9 14 12)(10 18 16)(17 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 5 8)
(0 5 11 8 1)(2 6 4)(3 20 15 13 7)(9 14 12)(10 18 16)(17 21 19)
2: (3 20 7)
(0 5 11 8 1)(2 6 4)(3)(7 15 13)(9 14 12)(10 18 16)(17 21 19)(20)
3: (2 6 4)
(0 5 11 8 1)(2)(3)(4)(6)(7 15 13)(9 14 12)(10 18 16)(17 21 19)(20)
4: (0 5 11)
(0 8 1)(2)(3)(4)(5)(6)(7 15 13)(9 14 12)(10 18 16)(11)(17 21 19)(20)